When four boys in South Park Stan Marsh, Kyle and his stepbrother Ike Broflovski, Eric Cartman, and Kenny McCormick sees an R-rated movie featuring Canadians "Terrance & Phillip: Asses of Fire", they are pronounced "corrupted", and Kyle"s mom Sheila with the rest of the parents pressure the United States to wage war against Canada for World War 3! It"s all up to Stan, Kyle and Cartman to save Terrence and Phillip before Satan and his lover Saddam Hussein from Hell rules the world and it"ll be the end of the whole world.

South Park: Bigger, Longer & Uncut is a 1999 animated musical comedy film based on the animated television series South Park, created by Matt Stone and Trey Parker. The film was directed by Parker, who also stars along with the rest of the regular voice cast from the series, including Stone, Mary Kay Bergman, and Isaac Hayes as Chef. It features twelve songs by Parker and Marc Shaiman with additional lyrics by Stone. It was produced by Paramount Pictures and Warner Bros. in association with Comedy Central.
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Synopsis:

When four boys in South Park Stan Marsh, Kyle and his stepbrother Ike Broflovski, Eric Cartman, and Kenny McCormick sees an R-rated movie featuring Canadians "Terrance & Phillip: Asses of Fire", they are pronounced "corrupted", and Kyle's mom Sheila with the rest of the parents pressure the United States to wage war against Canada for World War 3! It's all up to Stan, Kyle and Cartman to save Terrence and Phillip before Satan and his lover Saddam Hussein from Hell rules the world and it'll be the end of the whole world.